Extensible piano-stool.



No. 654,887. Patente-d Julyv 3|, |900.

A W. H. GINITTY.

EXTENSIBLE PIANO STODL.

(Application led June, 1899.)

(No Model.)

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' ITJV'E SES.

v :Tins co., PHoTo-Llrwo l UNITED `Sf'IfAfrrEg PATENT Cession.

WILLIAM HENRY eINIrTv, on NELsoNvILLn, oIIIo.

EXTENSlB-LE PIANO-STOOL SPECIFICATION forming part of ,Letters Patent No. 654,887, date-CI July s1, 1900.

Application tiled me ze, Isae.

To a/ZZ whom it may con/cern.-

le it known that I, WILLIAM HENRY GIN- ITTY, a citizen of the United States, residing at Nelsonville, in the county of Athens, State of Ohio, have invented certain new and useful Improvements in Extensible Piano- Stools; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being` had to the accompanying drawings, and to the letters of reference marked thereon, which forma part of this specification. y

This invention relates to an extensible'piano-stool; and it consists in the construction and arrangement of parts hereinafter fully set forth, and pointed out particularly in the claims.

The object of the invention is to providea piano-stool of simple and inexpensive construction in which the arrangement is such as to enable lthe stool to be extended, so as to serve as a double stool when desired, and a further arrangement whereby the top of the stool may be adjusted perfectly to any desired height. This object is attained by the mechanism illustrated in the accompanying drawings, in Which Figure 1 is a perspective view of a pianostool embodying my invention.; Fig. 2 is a vertical section Vthrough the stool as on line 2 2 of Fig. 1. Fig. 3 is an enlarged `vertical section through one-half of the stool, like parts being broken away. Fig. 4 is a horizontal section as on line 4 4 of Fig. 3. Fig. 5 is'an enlarged detail of the spring-actuated catch-block employed to support the seat of the stool in its raised position. Fig. 6 is an enlarged horizontal section as on line 6 6 of Fig. l. y

The top of the stool is composed of the parts A and B. These parts are adapted to slide together when the stool is serving as a single seat, as shown in Fig. 1, but may be drawn out to convert the stool into a double seat, as shown in Fig. 2, said parts sliding one over the other as the top of the stool isfextended or contracted in a manner well understood in the art. To provide for properly supporting the seat when extended, each of the parts A and B thereof is provided with a leg C, which is SerialNo. 721,656. (No model.)

rated and support the opposite ends of .the

seat, as'shown in Fig. 2.

To lock the sliding parts of the seat together when closed or when extended, the spring actuated locking-bolts a are employed,which are mounted in the inner end of the part B and are provided with right-angled end portions c, which project through a slotted open-` ing c in the end of the part A, whereby said locking-bolts may be actuated. The outer ends of said locking-bolts are enlarged,as shown at e, and are adapted to pass through the wall of the part B and into apertures e and e in the wall of the part A, the tension of the springs d forcing said rods outwardly, so as to maintain their end portions in said apertures and lock said parts together. By pressing the right-angled end portions o together the rods d are drawn longitudinally against the action of the springs d, so as to disengage their ends e` from theL apertures in` the part A, when the parts A and B are unlocked and may be drawn outwardly to extend the seat, as shown in Fig. 2, in which position the ends of the spring-actuated locking-bolts ct are forced by the springs d into the aperture e" in the opposite walls of the part A to lock the parts of the seat in their eX- tended position. When it is desired to close the seat, the locking-bolts are withdrawn from their apertures inthe wall of the part A, when said parts maybe caused to slide together to close the seat.

To provide for raising the seat vertically, each of the parts A and B thereof is provided with a depending rack-bar D, which is secured -thereto and depends Within the hollow leg C, in which it is adapted to slide vertically. On referring to Fig. 4 it will be seen that the rack-bar D is provided with a central vertical slot f, extending the entire length of said rack, through the notches g in the face thereof. Lying in said slot f is a vertical rod h, whose lower end is pivoted to a link h',

whiehisin nim' patted' in tilsiotf. The

. upper end of said rod is pivoted toalike link the curved arms F, between whose lower ends is journaledablock-G. The upper ends of said armspass out through the wall of leg andA are connectedl byra cross-rod m. Attached to the outer ends of said curved arms F are' the coiled springs n, vwhose tension exerts a downward force upon the outer ends of said 1 arms, thereby swinging said arms upon their pivotso and 'throwing the block G, carriedlr into the notches g pin p, projecting frombetween their lower ends, on the rack D. The the 'end of the block G, (see Fig. 5,) permits of the partial rotation of said block, so that as the rack-bar Dis raised by drawingmp wardupon the seat said block is engaged by the lower side of the notches of said rackbar and caused to` partially rotate and swing into e rack-bar D, when said bar may be lowered,l permitting the loweringot the seat asdesired.

-The construction and operation of thev tion toene leg. It will be understood that,V

the'recess H in the leg out of the path of the notches, so as to .permit `the rack-bar to'be raised,the block G bythe action of the springs lngbeing'r forced into each succeeding notch as the bar isdrawn upward.

block G engages in a notch in the rack-bar, while its ends rest upon the shoulders q in the leg, (see Fig. 5,) whereby the rack-bar is prevented Lfrom sliding downward. When .it is desired tolow'er the seat, the arm 4E is drawn outward, swinging the link h" to a horizontal positionl and carrying the rod h againstthe block G,` thereby moving said block into the recess Hout of the path of the notches of the mechanism for raising and lowering the seat, as described above, was described with rela- The links Y When the seat` has been'elevated to the desired height, thel theconstructio`ii is the saine in both legs and `stool is produced which may be extended so as to afford a double seat and said seat raised or lowered, as desired. When not in use as a double seat, the stool may be closed, as

yshown in Fig. 1, in which position it presents an appearance not materially dilerent from the ordinary single stool ,inuse. v

Having now fully set forth this invention, what is claimed is- 1. In a piano-stool, the combination of the two-part seat adapted to slide together so that the'seat may be extended or contracted horizontally, the overlapping sides of said parts being apert-uied to receive the locking-bolts, each of said parts having an independent leg, and the spring-actuated boltsadapted'to enterthe apertures of said overlapping sides for locking the two parts of the seat when closed or extended, said bolts having rightangled end portions extending through slots Vin said parts whereby said bolts may be actuated. Y

v2. In a piano-stool, thefcombinatlon of the two-part seat, said lparts being adapted to slide sov as to extend or contract said seat, an independent leg for each part of the seat, a rack-bar depen ding from the parts of the seat and adapted to slide vertically within said legs, rpivoted spring-actuated arms mounted in said legs, rotary blocks mounted upon said Ipivoted arms adapted to engage the notches of said rack-bars, a movable rod on each of said rack-bars adapted to engage said blocks, means for moving said rods against said blocks to swing said blocks out of the path of the teethjf the rack-bar Intestimony whereof I sign this specificaltio'n'in the presence of two witnesses.

WILLIAM HENRY GINITTY. Witnesses:4

BEssIE GINITTY, r ANNIE JAMES. 

